Adhesive applying mechanism



Dec. 27, 1938. H. F. AFI-ELDER ADHESIVE :APPLYING MECHANISM originalFiled Nov. 12,' 1954 2 sheets-sheet 1 ATTQRNEYS Dec. 27, 1938. H. F.AFI-ELDER 2,141,634

ADHESIVE APPLYING MECHANISM Original Filed Nov. 12, 1934 2 Sheets-Sheet2 INVNroR. HARRY F Aff-'ELDER ATTORNEY:

Patented Dee. 21, 193s IUNITED sTATEs` PATENT OFFICE ADHESIVE APPLYINGMECHANISM Harry F. Aifelder, Cleveland Heights, Ohio 'z claims. (ol.sii-50) This invention relates to adhesive applying mechanism and is adivision of my prior application Serial No. 752,666, filed November 12,1934, which has matured into Patent 2,083,539, issued on June 15, 1937.

The objectof the invention is to provide an improved adhesive applyingmechanism which is adaptable for use on machines for making variouskinds of articles from paper or other ilexible material, and isparticularlyuseful in machines such as constitutes the subject matter ofmy prior application, above referred Vto wherein the a-dhesive applyingmechanism is on a revolving head and receives adhesive from a sta- A1dtionary container or so called gum box.

The invention may be briefly summarized as consisting in certain novel'details of construction, and combination and arrangement of parts whichwill be described in the specification and set forth in the appendedclaims. f

In the accompanying drawings I have shown my invention applying to amachine which, as more fully described in my prior application, abovereferred to, is utilized for making bottle 5 collars and like articlesyfrom strips of flexible e material, such as paper, which are adapted to-be rolled up onto a former and to have their overlapping ends united bythe applicationof adhesive and byA punching tabs in the overlappingends. y l

In the drawings,

Fig. 1 is a side elevation of the upper part of the machine, or of somuch thereof as is pertinent to the present invention; 2

Fig. 2 is a horizontal sectional view substantially along the line 2-2of Fig. 1, omitting some parts unessential to the invention;

Fig. 3 is an enlarged fragmentary view showing the adhesive applyingmechanism detached from associated partys;

Fig. 4A is a sectional view substantially along' the line 4-4 of Fig. l,showing particularly the gum box for supplying the adhesive which isapplied to one end of each strip before it is formed into the article inquestion; and

Fig. 5 is a, sectional view taken substantially along the line 5-5 ofFig. 3, showing another detail of the adhesive applying mechanism.

Referring now to the drawings, the machine has a horizontal frame ortable 20' which is supported from the floor by legs not shown. At oneside of the bed is an upstanding standard 22 supporting a motor 23which, through reduction gearing 24, drives a vVertical centrallydisposed shaft 25 supported in bearings located in the boss 26 of an arm26a extending inwardly from the standard 22. The shaft has at the top a`bevel gear 24a which forms a part of the reduction gearing 24 and willbe referred to later.

Secured to. the lower end of the shaft 25 so 5 as to rotate therewith isan arm 21 on the lower free end of which is a block 28 supporting adiagonally disposed shaft on which is journaled a frusto-conical former30 which extends -in' Wardly. with respect to the frame or table 20 10with its axis inclined downwardly andintersecting the vertical axis ofthe machine. At the larger end of the former 30 is a bevel pinion. 3|which engages a bevel ring gear 32 supported in fixed position on theframe 20. Consequently, 15 as the shaft 25 and the arm 21 are rotated,the bevel pinion 3| is caused to roll around the ring gear 32, with theresult that the former 30 revolves about the vertical axis of themachine and rotates on its own axis. i 20 On each revolution of theformer, there is adapted to be wrapped around its conical surface astrip of paper or the like from which one of the articles is to beproduced, with the ends of the strip overlapping. While the former here25 shown is of frusto-conical shape, theparticular shape will dependupon the shape of the article to be produced. That .is to say, theformer will have a frusto-conical shape when the article produced isfrusto-conical. On the otherhand, 30 if the articles to be produced onthe machine are conical, cylindrical, or otherwise shaped, of course theformer will be similarly shaped.

During each cycle of the4 revolving ,and rotating movements of theformer 30, ,the latter 35 picks up and causes to be wrapped around itsfrusto-conical surface, as stated above, one of the strips, designated34 in Fig. 2. For this purpose I arrange beneath and-just inside thering gear 32 an elevator on which is adapted to be placed a stack of thestrips 34 (see Fig. 2), the arrangement being such that the former rollsover and picks up the uppermost strip of the stack during each cycle.

The mechanism by which the elevator is caused 5 to automatically moveupwardly, to keep the up- -permost strip of the stack at the rightheight relative to the former 30, forms no part "of the presentinvention and is neither shown nor described, but for a completeunderstanding of 50 mechanism which may be employed for this purposereference may be had to my prior application lreferred to.

Suction means is preferably utilized to cause the strip to be firmlyheld to and wrapped around 55 the former 30 and as the suction meansforms no part of the present invention some of the details of the sameare not herein illustrated, but are shown in Ymy prior application. Itwill be suicient to here state that I provide for this purpose a suctiontube 45, one end of which is attached to the block 28 forming a part ofthe rotating arm 21, this end of the tube being adapted to be connectedby suitable passageways to air ports which extend from the periphery orouter surface of the former 30 inwardly to a passageway suitablyconnected with the said end of the tube-45. The other end of the tube 45is connected to an opening extending axially through the centralvertical shaft 25 and in the upper end of the opening, through the shaft25, is seated a fitting to which is connected a suction tube 41 leadingto a vacuum pump, not shown. A vacuum gauge 48 at the top of the fittingis preferably provided, and an adjusting `screw 49 is screwed into apassageway leading to the central passageway of the fitting, so that thedegree of vacuum exerted in the suction line maybe varied as desired.The fitting has a close fit in the top of the shaft 25 but does notrotate with the shaft as the stiffness of the tube 41 is sufficient tohold it against rotation.

Thus, as`the rotating and revolving former 30 rolls over the uppermoststrip of the stack, the suction exerted on the uppermost strip which theroll engages causes the strip to be wrapped closely about the former andthe suction continues to be exerted on the strip until its ends aresecurely fastened together in a manner to be explained, and after theends are fastened together the suction is relieved so that the completedarticle may be stripped from the former. A means for accomplishing thisis fully disclosed in my prior application.

Before the former 30 rolls up onto the surface of the uppermost strip 34of the stack which is supported on the platform, a small quantity ofadhesive is deposited on the end of the strip remote from that which therotating and revolving former first engages, so that when the strip iscompletely rolled on the former the overlapping ends will be heldtogether by the adhesive. 'I'o apply the adhesive to the end portion ofthe strip before it is picked up, the following mechanism is utilized:

Mounted in stationary position above the rotating arm 21.0n a frame 56secured to the'inwardly ,projecting arm 26a of the standard 22 is agumbox 51 (Figs. ,1 and 11) in the sides of which is journaled a smallshaft carrying a gum roller 58, the surface-of which is adapted tocontact with the gum in the box, as will be apparent from Fig. 4. On oneend of the shaftV carrying the gum roller 58 is a star wheel 59. Duringeach revolution of the arm 21, adhesive istransferred from the peripheryof the roller 58 onto the surface of a rotating and revolving roller 6D(Figs. 1 and 5) preferably on a yieldable part of the periphery .of theroller 60, and in this instance on the arc-shaped surface of a yieldabledog 6|-pivotedin a slot in the roller 60, the free end being pressed outby a spring surrounding, an adjustable retaining screw 62, as clearlyindicated in Fig. l5.'- By having the adhesive -transferred from thesurface of the o roller 58 onto ayieldable member at the periphery ofthe roller 66, the necessity for fine adjustment is done away with.

'I'his roller 66 is xed to a short horizontal shaft 63 which projectsfrom the inner end 0f and is-in line with the rotating arm 21. Thisshaft 63 has its inner end journaled in the adjacent end of arm 21 andits outerend is supported and journaled in a bracket 64 which in vturnis supported by a frame 65 secured to and projecting from the arm 21, asclearly shown in Fig.l1. Also 'fixed to rotate with the shaft 63 is aspur gear 66 and a bevel gear 61, the latter engaging a stationary bevelgear 68 fixed to the lower inner part of the arm 26a concentric withrespect to the shaft 25. By reason of this arrangement, the roller 60revolves around the axis of the main vertical shaft 25 and it rotateswith its supporting shaft 63, and each time that it passes the lowersurface of the roller 58, a film of adhesive is applied to theVarc-shaped surface of the dog 6|.

From thesurface of the dog 6I the adhesive is transferred to yieldablefingers 69 (see Figs. 1 and 5) at the free end of a rotating andrevolving arm 16 which is xed to a short horizontal shaft 1| journaledin the lowerend of the revolving bracket 64 which, as previously stated,is supported by the frame 65 secured to the revolving armI 21. Alsofixed to` this short shaft 1| is a pinion 12 which engages the spur gear66 on the upper horizontal shaft 63. By reason of this arrangement, theapplying fingers 69 are carried around with the revolving arm 21 andthey rotate about the axis of shaft 1|. As they are passing through theupper arc of the circle in which they rotate, they pick up adhesive fromthe surface of the dog 6|, and when they are rotating through the lowerpart of the circle they touch and transfer the adhesive onto the endportion of the uppermost strip 34.

Inthis instance,'the pinion 12, because of lack of space, is madeone-half the size of the gear 66, in which event the fingers 69 rotatetwice while the upper roller carrying the dog 6| makes one rotation, butthat is immaterial since it simply means that the adhesive applyingfingers 69 rotate twice about the axis of the shaft 1l while theyrevolve once about the vertical axis of the machine, and therefore/makeone idle stroke and then an adhesive applying, stroke, etc. That is tosay, at each alternate rotation the fingers apply adhesive to theuppermost strip 34.

The roller 58 which projects into the gum box 51 is preferably turned ateach revolution of the revolving arm 21 so that there will always beplenty of adhesive on the lower part of the periphery oftheroller-,fjind'for this purpose I provide at-the top and outer portion ofthe bracket 64 a roller 13 (see Fig. l) which on each revolution of thearm 21 strikes one of the teeth of the star wheel 59 and rotates it andthe gum roller 58 a predetermined amount. To limit the rotative movement-given to the star wheel and therefore to the gum roller 58, a stop pin14' is arranged so that its lower end projects into the path of theupper tooth of the star wheel. 'I'his pin, which is spring-presseddownwardly, is movably supported in a strap 15 secured to a frame 16projecting laterally from the upper part of the boss 26 supporting themain vertical shaft 25 (see Fig. 1). At the top of the pin 14 is aroller 11 which rides on the upper surface of the large bevel gear 24awhich is secured to the top of the vertical shaft 25 and on the top ofthis bevel gear 24a \is a cam or boss 18which at each revolution of thegear24a momentarily lifts the roller 11 and therefore the pin 14 justbefore the roller 13 engages the lowermost tooth of the star wheel so asto allow the star wheel to be turned through an arc equivalent to thedistance between two adjoining teeth and not more than that distance,-the lower end of the pin 14 being released and moving down into the pathof the tooth next to the one 'which it had previously engaged so as tolimit the movement of the star wheel and therefore of the gum roller 58to the amount desired.

I do not regard it essential that the adhesive be applied precisely ashere shown, that is, to the end of the strip remote from the one whichis first rolled onto the former, for it may be applied onto the otherend of the strip when the strip is partly rolled onto the former.

Furthermore, I do not regard it essential that' the ygum roller beturned by the specic mechanism herein illustrated, i. e. through themedium of the star Wheel 59 and of the roller or equivalent means 'whichrevolves with the head. Obviously, a pawl and ratchet mechanism operatedAfrom a cam or other means on the rotating bevel gear 2da could beemployed.

In some instances, as, for example, with a machine such as utilized forforming bottle collars, it is desirable, in order that the machine havea high production rate, that the holding action of the adhesive betweenthe overlapping ends of the article be supplemented-by tabs punched inthe overlapping ends, which tabs serve the important purpose, of holdingthe ends together until the adhesive has dried. For this purpose thereis provided a flat punch plate 19 in fixed position just inside the ringgear 32 at a heght such that the former 30 will roll over it and at thedesired point circumferentially of the ring gear with reference to thestack of strips 34, this punch plate beingin this instance supported bya bracket secured to the bed 20, as clearly shown in Fig. 2. This punchplate carries a series of punches 88 corresponding in number andarrangement to the number and arrangement of the tabs which are to bepunched in the overlapping ends of the strip which is wrapped around.the former 38. Likewise, there is provided on the conical surface of theformer 30 a die plate 8l (which forms a part of the conical surface)this die plate having a series of dies or openings corresponding 'Y innumber and arrangement to the series of punches 80, the whole being soarranged that at each revolution of the former 30 the die plate 8| rollsover the punch plate 19 so that the protruding ends of the punches willenter the die openings. The overlapping ends of the strip 34 which isWrapped around the former 38 cover the die openings 82 of the die plate8| so that, as the revolving and rotating former 30 rolls over'the punchplate, tabs are punched inwardly in the overlapped ends of the strip,thus locking the ends.- of the strip together and completing the formation of the article. v

In stating that the former 30 rolls over the punch plate, the word overis used in a broad sense, meaning that there is a relative rollingaction between the former and the punch plate. For example, the punchplate may be supported at the proper levelv above the bed so that theformer will roll along its surface beneath the same. v

As soon as the former 30 passes the punchv plate, the article, which isnow completed, is stripped oi the former at its smaller or inner end,and in this instance slides down into or onto any suitable receivingmember. The stripping of the articles from the former 30 is preferablyaccomplished by a suitable stripper wheel 84 ling the subject matter ofvand I have, more briefly,

adhesive to which is rotatably supported on the frame or bed 20 insidethe ring gear-close to the punch plate 19, as clearly indicated in Fig.2, so that as the former 30 passes the punch plate the collar or otherarticle thereon comes in contact with the periphery of the stripperwheel which may be formed of rubber, such as sponge rubber, and causesthe article to be slid off the former 30 onto or into the receivingmember. It will be remembered that the suction which causes the strip tobe picked up and held on the former is automatically relieved justbefore the stripper wheel engages the formed article to remove it fromthe former 38. In this instance the stripper wheel is mounted on a shaft85 provided at its outer end with a sheave 86 engaged by a driven belt81 (Figs. l and 2) passing around a second sheave 88 at the outer end ofan upper horizontal shaft 89 supported on the frame 16 and provided atits inner end with a bevel pinion which engages and is rotated by thehorizontal bevel gear 24a at the top of the machine.

In this instance the articles when stripped from the former 30 pass downa gooseneck 98, which forms a continuation of the non-rotating shaftabout which the former 30 rotates, this gooseneck being a pipe or rodhaving a vertical portion which extends down beneath the bed 20 in linewith the axis of the machine and, therefore, in line with the' axis ofrevolution of the forming head. Supported at a suitable distance beneaththe bed is a turntable 92 adapted to be turned or indexed in ahorizontal plane and projecting up from this turntable is a series ofreceiving pins 93 which areadapted to receive the articles as they slidedown off the lower end of the goose.- neck.

The formed articles may be received, however,

in or on receiving members other than those herein referred to, thedetails of receiving members and of the indexing mechanism therefor, notbeing material to the present invention.

Above, I have described with considerable detail the adhesiveapplyingrnechanism constitutthe present invention referred to someassociated parts which perform important functions in a particular typeof machine, in this instance, a collar forming machine, but I wish itunderstood 'that I do' not intend to limit the application oftheadhesiyef applying mechanism to a machine of this particular character,as it may have utility in other types of machines wherein articles areformed into suitable shape, froml paper or other flexible material, andWhose ends are to be secured together by the application of Ia suitablepart of the strip, whether or not the holding action of the adhesive is.supplement-ed by other holding means, such as by tabs punched in theoverlapping ends.

- member adapted to support a strip of exible material, an arm revolvingrelative to said member, a stationary gum fountain. gum transferringparticular kind of anA means carried by the arm arranged to take acharge of gum from the fountain as it moves past the fountain, andanapplicator also carried by the arm arranged to receive a charge of gumfrom the transferring means during the same revolution of the arm and todeposit said charge upon said strip as the applicator moves past thestrip.

2. In a machine of the character described a member adapted to support astrip of material on which adhesive is adapted to be applied, arevolving head, a stationary gum fountain, a gum transferring membercarried bythe head and arranged to take a charge of gum from thefountain as it moves past the same, an applicator also carried by thehead and arranged to receive -a charge of gum from the transferringmember an applicator onthe other shaft arranged to revolve, a transfermember receive a charge of gum from the transfer member and to depositsaid charge upon the strip as the applicator moves past the strip.

4. In a machine of the character described, a Work supporting member, avertical shaft, a revolving arm carried by said shaft, a pair of shaftscarried by saidarm, gearing means for rotating said pair of shafts inopposite directions as they on one of said pair of shafts, an applicatoron the other of said pair of shafts adapted to engage said transfermember, a gum fountain supported on the fra'me of the machine, and a gumroller arranged to take gum from said fountain, said transfer memberbeing arranged to contact said gum roller once during each revolution ofthe arm.

5. In a machine of the character described, a frame, a work supportingmember thereon, a bracket carried by the frame above said supportingmember, a vertical shaft mounted in the bracket, means for rotating saidshaft, an arm carried by said shaft revolving with the shaft above saidwork supporting member, a pair of shafts carried by said arm, a gumfountain said horizontal shafts mounted on the bracket, a gum rollerarranged to take gum from said fountain,l gearing vmeans actuated by therotation of said vertical'shaft for rotating said pair of shafts as theyrevolve, a gum transfer member on one of said pair of shafts, and a gumapplicator on 'the other of said pair of shafts, said applicator beingadapted to contact said transfer member when the applicator is in itsuppermost position and to contactwork on the Work supporting member whenthe applicator is in its lowermost position, said transfer member beingadapted to engage said gum roller at one point in the revolution of saidarm.

6. In a machinel of the character described, a frame, a Work supportingmember thereon, a bracket carried by the frame above said supportingmember, a vertical shaft mountedin the bracket, means for rotating saidshaft, an arm carried by -said shaft and adapted to revolve with theshaft above said Work supporting member, a pair of vertically spacedhorizontal shafts carried by said arm, a gum fountain mounted on thebracket, a gum roller arranged to take gum from said fountain, gearingmeans actuated by the rotation of said vertical shaft for rotating asthey revolve about the vertical shaft,a gum transfer member on the upperhorizontal shaft, a gum applicator on the lower horizontal shaft, saidapplicator being adapted to contact said transfer member when theapplicator is inl its uppermost position and to contact work on the Worksupporting member When lthe applicator is in its iowermost position, andsaid transfer member being adapted to engage said gum roller at onepoint in the revolution of said arm, and means actuated by the rotationof said vertical shaft for rotating said gum roller through a smallangle for each revolution of the arm.

7. In a machine of the character described, a support adapted to receivean article to which gum is to be applied, a stationary gum fountain, anda gum transferring and applying mechanism movable with respect to thefountain, said mechanis'm including a member arranged to take a chargeof gum from the fountain as the said mechanism moves past the fountain,and a second member arranged to receive the charge of gum from the firstmember and to deposit the charge upon the article.

HARRY F. AFFELDER.

